<!--
 * @Description: 
 * @Author: zhao
 * @Date: 2022-06-28 11:16:18
 * @LastEditors: zhao
 * @LastEditTime: 2022-06-29 09:22:41
-->
<template>
    <el-breadcrumb class="app-breadcrumb" separator="/">
        <div class="title"></div>
        <!-- <transition-group name="breadcrumb">
      <el-breadcrumb-item v-for="(item, index) in levelList" :key="item.path">
        <span
          v-if="item.redirect === 'noRedirect' || index == levelList.length - 1"
          class="no-redirect"
          >{{ item.meta.title }}</span
        >
        <a v-else @click.prevent="handleLink(item)">{{ item.meta.title }}</a>
      </el-breadcrumb-item>
    </transition-group> -->
    </el-breadcrumb>
</template>

<script>
import pathToRegexp from "path-to-regexp"

export default {
    data() {
        return {
            levelList: null,
        }
    },
    watch: {
        $route() {
            this.getBreadcrumb()
        },
    },
    created() {
        this.getBreadcrumb()
    },
    methods: {
        getBreadcrumb() {
            // only show routes with meta.title
            let matched = this.$route.matched.filter((item) => item.meta && item.meta.title)
            const first = matched[0]

            if (!this.isDashboard(first)) {
                matched = [{ path: "/", meta: { title: "首页" } }].concat(matched)
            }

            this.levelList = matched.filter((item) => item.meta && item.meta.title && item.meta.breadcrumb !== false)
        },
        isDashboard(route) {
            const name = route && route.name
            if (!name) {
                return false
            }
            return name.trim().toLocaleLowerCase() === "Dashboard".toLocaleLowerCase()
        },
        pathCompile(path) {
            // To solve this problem https://github.com/PanJiaChen/vue-element-admin/issues/561
            const { params } = this.$route
            var toPath = pathToRegexp.compile(path)
            return toPath(params)
        },
        handleLink(item) {
            const { redirect, path } = item
            if (redirect) {
                this.$router.push(redirect)
                return
            }
            this.$router.push(this.pathCompile(path))
        },
    },
}
</script>

<style lang="scss" scoped>
.app-breadcrumb.el-breadcrumb {
    display: inline-block;
    font-size: 14px;
    line-height: 50px;
    margin-left: 8px;

    .no-redirect {
        color: #97a8be;
        cursor: text;
    }
}
.title {
    margin-top: 10px;
    height: 30px;
    padding: 0px 10px;
    line-height: 30px;
    border-radius: 3px;
    background: #f5f5f5;
    color: #ff6600;
}
</style>
